Door lock



Nov. 9, 1926. 1,605,909

J. ANDERSON DOOR LOCK Filed June 21, 192.? 2 Sheets-Sheet 1 I JM luhr/ Wir-725525 c/e JY/Qdrdon Nov. 9 1926.

J. ANDERSON DOOR LOCK Filed June 21, 1923 2 Sheets-Sheet 2 QE-E" nait s JERRY ANDERSON,

OF CHCAGO, ILLNOS, ASSIGNOR TO QUALTY HARDWARE AND LIACHINE CO., OF CHICAGO, ILLINOIS, ALCOPARTNERSHIP CONSISTING 0F C. A. LAYSTROM, H. A. LA YSTEOM, AND JERRY ANDERSON'.

` Doon Lock.`

Application filed .Tune 21,

aperture in the door for receiving the lock. 7

This method required a good deal of time und labor and was more or less expensive.y

To overcome these objections,I'have`in vented a lock for doors or the like' which consists of'an elongated casing preferably of cylindrical formation which merely requires that a proper edge of the doorat the desired 4height suitable hole be bored in 'the into which the inserted.

ln connection with this invention it is contemplated toprovide a flexible templet that may be folded over vthe proper edge'of the door for the purpose of marking the centers for thel bore, screw holes for the outer plates and whatever .apertures are neeessary,'.wheieby the installation of the lock is greatly simplified. y.

The invention comprises the novelstructures and combinations hereinafter described and more particularly pointedv out and defined in the appended claims.

In the accompanying drawings lwhich illustrate a preferred embodiment of4 this invention and in which similar reference numerals refer to similar' yfeatures in the different views:

Fig. 1 is a fragmentary elevational view of a door equipped with a lock embodying fea-tures of the present invention.

Fig. 2 is an enlarged longitudinal sectional view through the lock and adjacent parts of a door.

lock casing maybe lreadily Fig. 3 is a section on the line 3-3 ofy Fig. 2.

Fig. lis an enlarged sectional view taken subst-antiallvY along line /1-4 of Fig. 2.

Fig. 5 is an enlarged sectional view along the line 5-5 of Fig. 2.

Fig. 6 is a sectional view along the line 6 6 of Fig. 5 with parts of the door omitted.

Fig. 7 is a front elevational view of the lock.

Fig. 8 is a sectional view upon' the line-v 8-8 of Fig. 5 with parts omitted.

lock casing 'for '1923. serial No; 646.752.

- Figfg is ai' sec-tional View in elevation of a lock embodying features ofthe present invention.

' Fig.l 1 0 is a'secti'onal vieu' taken"substan tially' alongwline'Xs-'X'of Figure 9.I Fig. v11 is a sectional yView 'taken substan- In referring to" 'thel drawing,A

there i"is shown 'an'e'lon'gated lock lcasing 4'1, which is prefe'lably of tubularlform so that the saine Ymay be'ins'erted :in cylindrical hole bored inthe end ofthey door'f'A latch bolt 2'is mounted fee ting. ,"Th'e outerfen' beveled as' usual:andl isadaptefd for "entering a airffffe aber ambi? The 10611512 is -prevideagwiui marmein@ asentar pei-.

reciprocation intlie lockcasa Of uit." nach but is of' theslott rminatiiig in arcuate circuformed at the .junctureof the two late rally'- projecting fins [6 'M ,which' 'extend through diametrically `opposite .slots 7 lin the lock casing. The extreme rearz end of the. latch bolt is circular *and t `a. locki n, tongue 8 p rojectslv long ,ritudinallyl 'from the 'circular portion 'adjacent the. periphery 'there'ozf 'A 'cylindrical barelzgextends transversely of the lock casing through the slot in the latch bolt. The barrel has a polygonal aperture through which the shank of the door knobs extend and an abutment or turnback 10 having converging rear faces corresponding to those of the shoulders 5. Rotation of the barrel by the door knobs will cause the abutment 10 to retract the bolt. as is obvious.

The rear end of the lock casing has a pair of diametrically opposite apertures as shown in Fig. 5. A cylindrical key barrel 11 eX- tends through these apertures and has its ends crimped over the margins of lthe apertures. Within the key barrel are the washers 12 and 13, through which the key slot eX- tends. The washers 12 and 13 are alternately arranged and have different internal diameters. The inner end of the key barrel is closed by a slotted Washer 14 through which the night latch actuator 15 eXtends, and adjacent the washer 14 there is a rotatable disk 16 having` a central slot 17 for receiving the actuator 15 and the end of a key 18 from opposite directions. The locking diskj 16 is provided with a recess 19 and the key barrel is provided with a slot 2O in the same circumferential plane as the recess. The recess 19 and slot 2() are ot suclr a size as to admit the tongue or tail 8 of the latch bolt. Then the locking disk 16 is in the position shown in Fig. 2, the latch bolt can be retracted; the tail 8 passing through the slot in the key barrel and through the recess in the locking diskl However, if the lockingT disk is turned by either the key or actuator 15 a half revolution to the position shown in F ig. 6, the locking disk will be in the path of the tail 8, and prevent retraction of the latch bolt. A spring 21 is conlined between the key barrel and the rear end of the latch bolt for automatically projectingthe bolt.

The structure shown in Figure 9 comprises a tubular casing 1 having a reciprocable sheath 22 which surrounds the latch bolt 2 and is provided` with an internal rack 23 meshing with a segmental gear 24 constituting a part ofthe locking .disk 16a.4 In this linstance the washersin the key barrel are provided with two sets of .slots at right .angles to each other as indicated inFigure 11, so that a quarter turn of the key will rotate the locking disk into locking engagement with the tail S of the latch bolt and simultaneously project the sheath 22 into the door j amb so that it will be impossible for a burglar to insert a tool between the door and the jamb and pry the latch bolt back. As shown, the sheath 22 is slotted to .receive the iins 6 of t-he locking bolt. When the key is turned to unlock the door, the sheath 22 will be retracted as is obvious. The spring 21, in this instance, is retained against the latch bolt by a pin.

The lock casing is held `in its position by a lock plate 25, which is shrunk or aiixed in a suitable way to the front end thereof and is screwed to the front edge of the door. The ornamental side plates 26 may be readily applied to the two sides ot the door; the proper position having been located by the templet.

It is characteristic of this invention that the lock casing is of tubular t'orm and requires merely the drilling of a hole in the front end of the door. rlhe invention thus avoids the expensive mortise that usually had to be chiselled in the door. It is further characteristic of this invention that the .lock is a very compact and si-mple structure of few parts.

I am aware that numerous details of con- ,V

struct-ion may be varied throughv 'la wide range Without departing from the principles of this invention, and Itheretore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

l. In a door lock, a tubular casing, a

vsheath in said casing, a latch bolt slidably fitti-ng within said sheath and having a reduced portion defining an abutment and a slot in said reduced portion, means normally acting to extend said bolt7 a turn back eX- tending through said slot for cooperating with said abutment, a rotatable element in therearof said bolt `havinga recess for re- I Iceivlng a portion of said bolt, sald element being adapted tob'e rotated in the path of said bolt for locking the same and simultaneouslj)Y projecting the sheath.

2. In a device'ot the character described,v

a tubular casing, a sheath in said casing, a latch bolt slidable in said sheath, means for projecting,T said latch bolt independent of said sheath, and key operated means for projecting said sheath, ysaid key operated means being effective to prevent retraction of said latch bolt.

In testimony whereof I have hereunto subscribed xny name.

JERRY ANDERSON. 

